"""4-7"""



# schoolbag = ['语文书','数学书','练习册','笔盒']
# schoolbag1 = schoolbag
# print(schoolbag,schoolbag1)
# schoolbag[0] = '英语书'
# print(schoolbag,schoolbag1)

"4-8"


# schooldag = ['语文书','数学书','英语书','漫画书']
# length = len(schooldag)
# i = 0
# while i <length:
#     print(schooldag[i])
#     i +=1

"4-9"


# schooldag = ['语文书','数学书','英语书','漫画书']
# for item in schooldag:
#     print(item)

"4-10"

# C
# print(schooldag)
# workbook = ['语文练习册','数学练习册']
# penbox = ['铅笔','油笔','橡皮',]
# schooldag.extend(workbook)
# print(schooldag)
# schooldag.append(penbox)
# print(schooldag)

"4-11"

# schooldag = ['语文书','数学书','英语书','漫画书']
# print(schooldag)
# schooldag.pop(2)
# print(schooldag)
# schooldag.remove('漫画书')
# print(schooldag)